Variable speed three-phase motor drive with two inverter circuits
    3.
    发明授权
    Variable speed three-phase motor drive with two inverter circuits 失效
    变频三相电机驱动,带两个逆变电路

    公开(公告)号:US06242883B1

    公开(公告)日:2001-06-05

    申请号:US09027858

    申请日:1998-02-23

    CPC classification number: H02M7/5387 H02M5/45 H02P2209/05

    Abstract: An apparatus and method for driving a three-phase motor from an AC energy source includes a converter connected between the energy source and an inverter. The inverter includes two inverter circuits controlled by a logic circuit. The outputs of the inverter circuits have a phase angle therebetween of 60° and are connected directly to two inputs of the motor. The remaining motor input can be connected to either the first or second line of the energy source. Both the frequency and the magnitude of the voltage waveforms can be varied to control the speed of the motor.

    Abstract translation: 用于从AC能量源驱动三相电动机的装置和方法包括连接在能源和逆变器之间的转换器。 逆变器包括由逻辑电路控制的两个逆变器电路。 逆变器电路的输出端之间的相位角为60°,并直接连接到电动机的两个输入端。 剩余的电机输入可以连接到能源的第一行或第二行。 可以改变电压波形的频率和幅度,以控制电机的速度。

    Two-phase inverter drive for a three-phase motor
    4.
    发明授权
    Two-phase inverter drive for a three-phase motor 失效
    三相电机的两相变频器驱动

    公开(公告)号:US5406185A

    公开(公告)日:1995-04-11

    申请号:US72511

    申请日:1993-06-04

    CPC classification number: H02P1/26

    Abstract: A low-cost means to drive a three-phase motor from a DC energy source. The low cost is achieved by requiring only two inverter circuits instead of the conventional three inverter circuits. The third input phase to the motor is grounded. Balanced three-phase power is developed across the three stator coils of the motor, resulting in normal three-phase operation, including control of rotational direction. This is accomplished by appropriately selecting the phase angle of the two active phases.

    Abstract translation: 从直流能源驱动三相电机的低成本手段。 低成本通过仅需要两个逆变器电路而不是传统的三个逆变器电路来实现。 电机的第三个输入相接地。 在电动机的三个定子线圈之间开发了平衡的三相电力,导致正常的三相运行,包括旋转方向的控制。 这是通过适当地选择两个活性相的相位角来实现的。

    Method for testing DC motors
    5.
    发明授权
    Method for testing DC motors 失效
    直流电机测试方法

    公开(公告)号:US4744041A

    公开(公告)日:1988-05-10

    申请号:US707709

    申请日:1985-03-04

    CPC classification number: G01R31/34 G01P3/48

    Abstract: Disclosed is a DC parameter motor tester based on current time response, which tester does not require coupling of the motor (14) to some mechanical device or measuring other noise sensitive parameters taken from only a few discrete data points. As is disclosed, the steady state speed of the motor is determined from the frequency composition of the commutation noise and ripple in the steady state current by performing a fast fourier transform on the steady state current to determine its power-spectral-density which shows the frequency composition of the steady state current waveform by giving the power in the waveform at each frequency. The frequency at which the most power exists is divided by the number or twice the number, depending upon the construction of the motor, of commutation segments in the motor to determine the motor's frequency of rotation or velocity at measured power input. The parameters which are derived from the current time response points are taken from data in which such data has a significant, if not dominant influence.

    Abstract translation: 公开了一种基于当前时间响应的直流参数电动机测试仪,该测试仪不需要将马达(14)耦合到某些机械装置或测量仅从少数离散数据点获取的其它噪声敏感参数。 如所公开的,通过对稳态电流执行快速傅立叶变换来确定其功率谱密度,从稳态电流中的换向噪声和纹波的频率组成来确定电动机的稳态速度,以确定其功率谱密度, 通过在每个频率处给出波形中的功率来使稳态电流波形的频率合成。 最大功率存在的频率除以数量或数量的两倍,取决于电动机的结构,电动机中的换向段,以确定电动机的转速或测量的功率输入的速度。 从当前时间响应点导出的参数取自其中这样的数据具有显着的,即使不是主要影响的数据。

    Methods for authenticating an identity of an article in electrical communication with a verifier system
    6.
    发明授权
    Methods for authenticating an identity of an article in electrical communication with a verifier system 有权
    用于验证与验证者系统电通信的物品的身份的方法

    公开(公告)号:US07788490B2

    公开(公告)日:2010-08-31

    申请号:US11096600

    申请日:2005-04-01

    CPC classification number: H04L9/3271 H04L9/3242 H04L2209/56

    Abstract: Methods for authenticating a property of an article in electrical communication with a verifier system including, for example, reading an identification code from the article, generating a challenge phrase from a verifier system, writing a challenge phrase to a first memory location on the article, reading a response phrase from the second memory location on the article, wherein the second memory location is configured to respond with a combinational logic gate output of the second memory location and the first memory location, generating a message authentication code by encrypting the identification code using a predetermined algorithm, generating a comparison code, wherein the comparison code is a combination logic gate output of the message authentication code and the challenge phrase, and determining if the comparison code is equivalent to the response phrase. Articles configured for use with the same.

    Abstract translation: 用于验证与验证器系统电通信的物品的属性的方法,包括例如从物品读取识别码,从验证器系统生成挑战短语,将挑战短语写入物品上的第一存储器位置, 从所述物品上的第二存储器位置读取响应短语,其中所述第二存储器位置被配置为响应于所述第二存储器位置和所述第一存储器位置的组合逻辑门输出,通过使用 生成比较代码的预定算法,其中所述比较代码是所述消息认证码和所述挑战短语的组合逻辑门输出,以及确定所述比较码是否等同于所述响应短语。 配置为使用的文章。

    SYSTEM FOR PROVIDING TECHNICAL SUPPORT RELATING TO AN IMAGING CARTRIDGE USED IN AN IMAGING APPARATUS
    7.
    发明申请
    SYSTEM FOR PROVIDING TECHNICAL SUPPORT RELATING TO AN IMAGING CARTRIDGE USED IN AN IMAGING APPARATUS 审中-公开
    用于在成像装置中使用的成像盒提供技术支持的系统

    公开(公告)号:US20080181622A1

    公开(公告)日:2008-07-31

    申请号:US12019934

    申请日:2008-01-25

    CPC classification number: G03G15/5079 G03G2221/1823

    Abstract: A system for providing technical support to a customer relating to an imaging cartridge used in an imaging apparatus includes a memory, diagnostic software, and technical support software. The memory is associated with the imaging cartridge, and stores diagnostics data. The diagnostic software is associated with a type of the imaging apparatus. The diagnostic software executes to read the diagnostics data from the memory and generate a diagnostic code based thereon. The technical support software executes to perform an analysis of the diagnostic code and to determine an action to be taken based on the analysis of the diagnostic code.

    Abstract translation: 用于向成像设备提供与成像盒相关的技术支持的系统包括存储器,诊断软件和技术支持软件。 存储器与成像盒相关联,并存储诊断数据。 诊断软件与成像装置的类型相关联。 执行诊断软件以从存储器读取诊断数据,并基于此生成诊断代码。 执行技术支持软件对诊断代码进行分析,并根据诊断代码的分析确定要采取的操作。

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